I live in a major city and have been walking home alone at any hour I choose.
BUT I have never done it drunk. I know that if I fall, get lost, lose my bag, try to cross the road, get on the wrong bus, fall asleep until the end of the line or encounter an unsavoury character (thief or rapist), then I will not be able to deal with any of those things safely.
It is completely stupid do put yourself at risk. All the other things are surely non-contentious. You are hardly a victim if you drive rat-arsed and run over a load of people.,
Ask any policeman, paramedic, A&E nurse or Transport worker about the risks and consequences of getting seriously pissed and making stupid decisions. (But no, much more fun to comment on a poster)